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Finding the Fourth Proportional to 140,587.26, 210,912.08 and 40,751.52

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Solution

The fourth proportional to 140,587.26, 210,912.08 and 40,751.52 is: 61,136.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,587.26 : 210,912.08 = 40,751.52 : x
  2. Step 2: Convert to fraction form
    140,587.26/210,912.08 = 40,751.52/x
  3. Step 3: Cross multiply
    140,587.26x = 210,912.08 × 40,751.52
  4. Step 4: Simplify right side
    140,587.26x = 8,594,987,642.60
  5. Step 5: Solve for x
    x = 8,594,987,642.60/140,587.26
  6. Step 6: Final answer
    x = 61,136.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.